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현차시험에 의한 디젤기관차용 합성제륜자의 마모특성 연구
권석진(Kwon Seok-Jin),최경진(Choi Kyung-Jin),고광범(Ko Kang-Bum),이장희(Lee Jang-Hee) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-
In this paper, we investigated the wear rate, braking temperature and stopping distance of the composite brake shoe for diesel locomotive in the field test. The wear rate and braking temperature of the composite brake shoe would rather than cast iron. Also, the stopping distance of composite brake shoe is 450m at 100㎞/h. This result of field test shown that the density distribution of the composite brake shoe influence on wear rate.
권석진(Seok-Jin Kwon),서정원(Jung-Won Seo),이동형(Dong-Hyung Lee),이찬우(Chan-Woo Lee) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The majority of catastrophic wheel failures are caused by surface opening fatigue cracks either in the wheel tread or wheel flange areas. Since failure in railway wheels can cause a disaster, regular inspection of defects in wheels is mandatory. In the present paper, the ICFPD technique is applied to the detection of surface defects for railway wheels. To detect the defects for railway wheels, the sensor for ICFPD is optimized and the tests are carried out with respect to 4 surface defects each other. The defect detections in railway wheels by using ICFPD was carried out in the azimuthal direction. The result show that the surface crack depth of 1.0 ㎜ and in wheel tread could be detected by using this method. The ICFPD method is useful to detect the defect that initiated in the tread of railway wheels..
적외선열화상 이미지법과 패턴 인식을 이용한 철도차량 회전기기의 비파괴 진단
권석진(Seok Jin Kwon),김민수(Min Su Kim),서정원(Jung Won Seo),강부병(Bu Beong Kang) 한국비파괴검사학회 2016 한국비파괴검사학회지 Vol.36 No.4
차량 부품의 고장은 운용 중단과 탈선 결과로 나타날 수 있으며 차량 주요부품의 이상상태를 진단하는 것은 중요하다. 온도를 이용한 진단 방법은 철도차량 회전기기의 –예를 들면, 베어링, 감속기, 견인전동기, 디스크- 비정상 상태를 진단하는 기본적인 방법이다. 본 연구에서는 적외선열화상과 패턴 이미지법을 이용하여 차량 하부의 회전기기의 이상 진단시스템을 구축하여 현장시험을 수행하였다. 그 이상상태 진단시스템은 차량 하부 회전기기의 이상발열 상태를 진단할 수 있었으며 비정상 상태를 평가할 수 있었다. The faults in railway vehicle components may result in either the stoppage of the service and the derailment of the vehicle. Therefore, it is important to diagnose and monitor the main components of a railway vehicle. The use of temperature is one of the basic methods for the diagnosis of abnormal conditions in the rotational components of a railway vehicle, such as bearings, reduction gears, brake discs, wheels and traction motors. In the present study, the diagnose of the rotational components using infrared thermography and a pattern recognition technique was carried out and a field test was performed. The results show that this method of diagnosis using infrared thermography can be used to identify abnormal conditions in rotational components of a railway vehicle.